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单选题
They called in an electrician _____ he could put a finger on the cause of the short circuit.
A
to hope
B
to be hoping
C
hoping
D
to have hoped
参考答案
参考解析
解析：
句意：他们叫来了电工，希望他能帮忙查出短路的原因。hoping在此处为现在分词形式表原因状语。
句意：他们叫来了电工，希望他能帮忙查出短路的原因。hoping在此处为现在分词形式表原因状语。
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